05 句型专项归类

　　1.肯定句:是指用肯定的语气来陈述的句子,如:I'm a student. She is a doctor. He works in a hospital.

　　There are four fans in our classroom. He will eat lunch at 12:00. I watched TV yesterday evening.

　　2,否定句:含有否定词或表示否定意义词的句子,如:I'm not a student. She is not (isn't) a doctor.

　　He does not (doesn't) work in a hospital. There are not (aren't) four fans in our classroom.

　　He will not (won't) eat lunch at 12:00. I did not (didn't) watch TV yesterday evening.

　　☆注意☆ 小结:否定句主要是在肯定句的基础上加上了否定词 "not".有动词be的句子则"not"加在be后面,可缩写成"isn't,aren't",但am not 一般都分开写.没有动词be的句子则要先在主要动词的前面加上一个助动词(do,does,did),然后在它后面加上"not",你也可以把它们缩写在一起如"don't , doesn't , didn't ).这三个助动词要根据人称和时态来选择,其中"does"只用于一般现在时主语是第三人称单数的情况,而"did"只用于一般过去时,不论主语是什么人称和数,都用"did" .

　　3,一般疑问句:是指询问事实的句子,此类句子必须用"yes",或"no"来回答.

　　如:Are you a student Yes, I am / No, I'm not.

　　Is she a doctor Yes, she is. / No, she isn't.

　　Does he work in a hospital Yes, he does. / No, he doesn't.

　　Are there four fans in our classroom Yes, there are. / No, there aren't.

　　Are you going to buy a comic book tonight Yes, I am. / No, I am not. (Yes, we are. / No, we aren't.)

　　Will he eat lunch at 12:00 Yes, I will. / No, I will not(won't).

　　Are they swimming Yes, they are. / No, they aren't.

　　Did you watch TV yesterday evening Yes, I did. / No, I didn't.

　　☆注意☆ 小结:一般疑问句是在肯定句的基础上,

　　①把动词be调到首位,其他照写,末尾标点符号变成问号即可.

　　②没有动词be的句子则要在句首加上一个助动词(do,does,did)再把紧跟在后面的动词变回原形,末尾标点符号变成问号即可.

　　这三个助动词也要根据人称和时态来选择,其中"does"只用于一般现在时主语是第三人称单数的情况,而"did"只用于一般过去时,不论主语是什么人称和数,都用"did" .一般疑问句有个重要的原则就是问和答要一致,即问句里的第一个单词(助动词)和简略答句里的这个词是一致的.

　　4,特殊疑问句:以特殊疑问词(what , where , who , which , when , whose , why , how等)开头引导的句子.此类句子应该问什么就答什么,不能用"yes ,no"来回答.如:

　　What is this It's a computer.

　　What does he do He's a doctor.

　　Where are you going I'm going to Beijing.

　　Who played football with you yesterday afternoon Mike.

　　Which season do you like best Summer.

　　When do you usually get up I usually get up at 6:30.

　　Whose skirt is this It's Amy's.

　　Why do you like spring best Because I can plant trees.

　　How are you I'm fine. / I'm happy.

　　How did you go to Xinjiang I went to Xinjiang by train.

　　☆其中how又可以和其他一些形容词连用组成特殊疑问词组用来提问,如: how many(多少(数量)), how much(多少(钱)), how tall(多高), how long(多长), how big(多大), how heavy(多重)

　　例句:How many pencils do you have I have three pencils.

　　How many girls can you see I can see four girls.

　　How many desks are there in your classroom There are 51.

　　☆小结:how many 用来提问可数名词的数量,主要有以上三种句式搭配,

　　How many + 名词复数 + do you have 你有多少……

　　How many + 名词复数 + can you see 你能看见多少……

　　How many + 名词复数 + are there… 有多少……